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musickatia [10]
3 years ago
14

How do i solve this using the substitution method

Mathematics
1 answer:
lana [24]3 years ago
5 0
First make them one side equation =0
0=-2y+4x+10
0=2y+6x-10 
0=2x
x=0
substituted 0 in any of the original equation 
2y=4(0)+10
2y=10 ....../2
y=5
check 2(5)=4(0)+10 .......>10=10
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8 0
3 years ago
If a regular polygon has 72 sides and an order of 72,what is the polygon’s rotational angle?
Misha Larkins [42]

Answer:

The rotational angle of a regular polygon with 72 sides is 5º.

Step-by-step explanation:

The rotational angle (\theta), measured in sexagesimal degrees, of polygon of n sides is the angle of a complete revolution divided by the number of sides (n). That is:

\theta = \frac{360}{n} (1)

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7 0
3 years ago
587 to 1 significant figure​
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